CAN canopy addition of nitrogen better illustrate the effect of atmospheric nitrogen deposition on forest ecosystem?

Wei Zhang, Weijun Shen, Shidan Zhu, Shiqiang Wan, Yiqi Luo, Junhua Yan, Keya Wang, Lei Liu, Huitang Dai, Peixue Li, Keyuan Dai, Weixin Zhang, Zhanfeng Liu, Faming Wang, Yuanwen Kuang, Zhian Li, Yongbiao Lin, Xingquan Rao, Jiong Li, Bi ZouXian Cai, Jiangming Mo, Ping Zhao, Qing Ye, Jianguo Huang, Shenglei FuShow 6 othersShow less